EnviroDIY | Dan | Activity https://www.envirodiy.org/members/dmevans1plymouth-edu/activity/ Activity feed for Dan. Mon, 27 Apr 2026 13:51:54 -0400 https://buddypress.org/?v= en-US 30 hourly 2 7a236f605fce93ae0b06dfd01502e7d9 Dan started the topic SDI12 and analog code in the forum Mayfly Data Logger https://www.envirodiy.org/topic/sdi12-and-analog-code/ Fri, 02 Dec 2022 17:34:48 -0500 Hello,

I am putting together a micromet station that includes some sdi12 sensors (meter group Terros 21, and Acclima 315H) and some analog thermistors (homebuilt but the same components as the Campbell Sci 107) with a second resistor (24.9K) wired between the return wire and the ground. I have some separate pieces of example code for the SDI12…[Read more]

]]> da890da989576816dac8e9ed16988e9c Dan replied to the topic PAR issue with Mayfly in the forum Mayfly Data Logger https://www.envirodiy.org/topic/par-issue-with-mayfly/#post-17405 Tue, 18 Oct 2022 14:34:55 -0400 I updated the ADC library and changed the ADC definition on line 77 to the 1115 and that did the trick. 1.5V.   I am assuming that any past data taken in the field with the wrong ADC definition cannot be back calculated. But moving forward we have a working PAR sensor.

Thank you so much for taking the time to help solve this. Much appreciated.

]]> 1715d301995d45c3f08c7d4c5ef4bc4a Dan replied to the topic PAR issue with Mayfly in the forum Mayfly Data Logger https://www.envirodiy.org/topic/par-issue-with-mayfly/#post-17399 Fri, 14 Oct 2022 15:56:13 -0400 Current board that I am working on in the lab is a 0.5b. But we have run into the same issue with logging/calculating PAR using version 1.0 as well. We are running a mix of 0.5 and 1.0 in the field due to many of the older 0.5’s USB ports failing.

Dan

]]> 442f9d902f0db71760838606c8771ac3 Dan replied to the topic PAR issue with Mayfly in the forum Mayfly Data Logger https://www.envirodiy.org/topic/par-issue-with-mayfly/#post-17393 Thu, 13 Oct 2022 14:47:12 -0400 Shannon,

As you suggested, I tested a duplicate of our set up in the lab and used a power supply source set at 1.5V in the aa0 and aa1 ports used to measure PAR on the mayfly. I get 93 mV and 470 umol for PAR. Clearly wrong. It appears the bits are recorded wrong or they are converted to mV incorrectly.  Any thoughts on a next step to…[Read more]

]]> ba4bed2015f7cfe2cfb5af36148adb6b Dan replied to the topic PAR issue with Mayfly in the forum Mayfly Data Logger https://www.envirodiy.org/topic/par-issue-with-mayfly/#post-17388 Fri, 07 Oct 2022 14:08:14 -0400 Shannon

I’ll give your suggestions a shot and see if we learn anything.

Thanks for the quick reply.

 

]]> ace60c4ef6b6f953f61f512c79071dda Dan started the topic PAR issue with Mayfly in the forum Mayfly Data Logger https://www.envirodiy.org/topic/par-issue-with-mayfly/ Thu, 06 Oct 2022 14:25:39 -0400 Hello,

I am working with a team measuring a host of variables off of mostly SDI12 sensors using both the newest and older Mayflys. We have run into an issue measuring PAR on our Mayfly logger stations. We are using analog Apogee SQ 100 sensors. We get data from the sensors/code, but the output values are about 10x too low. The relevant code is…[Read more]

]]> 9e81c8c3920c79037039b67e296bc1b9 Dan started the topic Vertical SD card in the forum Miscellaneous https://www.envirodiy.org/topic/vertical-sd-card/ Mon, 18 Nov 2019 18:02:12 -0500 Is it possible to buy the vertical micro SD card reader without buying the Mayfly starter kit? Has anyone found an alternate version of this type of reader? I like using small boxes due to the reduced costs, but having the SD card face out is often challenging to work around.
Thanks

]]> f7aaf124cd17f6282e9462ded9831612 Dan became a registered member https://www.envirodiy.org/activity/p/4466/ Mon, 18 Nov 2019 17:57:04 -0500 0